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Mechanism of Measles Virus–Induced Suppression of Inflammatory Immune Responses

Identifieur interne : 00B999 ( Main/Exploration ); précédent : 00B998; suivant : 00BA00

Mechanism of Measles Virus–Induced Suppression of Inflammatory Immune Responses

Auteurs : Julien C. Marie [France] ; Jeanne Kehren [France] ; Marie-Claude Trescol-Biémont [France] ; Alexey Evlashev [France] ; Hélène Valentin [France] ; Thierry Walzer [France] ; Rosine Tedone [France] ; Bruce Loveland [Australie] ; Jean-François Nicolas [France] ; Chantal Rabourdin-Combe [France] ; Branka Horvat [France]

Source :

RBID : ISTEX:1EE2E448B00A1E3E53C7B93755CD449A4E27250C

Descripteurs français

English descriptors

Abstract

Abstract: Measles virus (MV) causes profound immunosuppression, resulting in high infant mortality. The mechanisms are poorly understood, largely due to the lack of a suitable animal model. Here, we report that particular MV proteins, in the absence of MV replication, could generate a systemic immunosuppression in mice through two pathways: (1) via MV-nucleoprotein and its receptor FcγR on dendritic cells; and (2) via virus envelope glycoproteins and the MV-hemagglutinin cellular receptor, CD46. The effects comprise reduced hypersensitivity responses associated with impaired function of dendritic cells, decreased production of IL-12, and the loss of antigen-specific T cell proliferation. These results introduce a novel model for testing the immunosuppressive potential of anti-measles vaccines and reveal a specific mechanism of MV-induced modulation of inflammatory reactions.

Url:
DOI: 10.1016/S1074-7613(01)00090-5


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<div type="abstract" xml:lang="en">Abstract: Measles virus (MV) causes profound immunosuppression, resulting in high infant mortality. The mechanisms are poorly understood, largely due to the lack of a suitable animal model. Here, we report that particular MV proteins, in the absence of MV replication, could generate a systemic immunosuppression in mice through two pathways: (1) via MV-nucleoprotein and its receptor FcγR on dendritic cells; and (2) via virus envelope glycoproteins and the MV-hemagglutinin cellular receptor, CD46. The effects comprise reduced hypersensitivity responses associated with impaired function of dendritic cells, decreased production of IL-12, and the loss of antigen-specific T cell proliferation. These results introduce a novel model for testing the immunosuppressive potential of anti-measles vaccines and reveal a specific mechanism of MV-induced modulation of inflammatory reactions.</div>
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